Gas Chromatograph Test
Bronz-Glow Coil Coat & Husky Green
Fin Coil Protector
Testing
for evidence of solvents in the finished coatings
The above captioned test was performed on Bronz-Glow Coil
Coat and Husky Green Fin Coil Protector by an independent
laboratory. Test method used is as follows:
I. PREPARATION
Three airtight containers were used. Each was pre-cleaned
with an alkaline cleaner followed by a water rinse, then followed
by an isopropyl alcohol rinse and allowed to dry to ensure
no residue was present. Container “A” was sealed
with no contents (“CONTROL A”)
Into container “B” was placed a sample of aluminum
fin stock coated with Bronz-Glow Coil Coat, a multiple step
coating process, using a proprietary Polyelastomer, dip processed
coating. Container “B” was sealed (“SAMPLE
B”)
Into container “C” was placed a sample of aluminum
fin stock coated with Bronz-Glow Husky Green Fin Coil Protector.
This is a basic three step coating process, using a proprietary
Polyelastomer, applied by aerosol spray. Container “C” was
sealed (“SAMPLE C”)
In addition, a fourth sample was taken of air including
a trace of perchloroethylene.
Container “D” was sealed (“CONTROL D”)
II. PROCEDURE
Each sealed container was stored at 48.89° C (120° F)
for ten minutes to accelerate the evaporation of any remaining
solvents.
Each container was removed, and a one microlitre (1ul) syringe
inserted, drawing a sample of the air from within. The air
sample was then injected into a gas chromatograph.
Test conditions were at 110° C (230° F) for 10 minutes,
using a 0.53 mm capillary column with a flame ionization
detector. Detector limits are less than one part per million
(ppm), which is less than the TLV (Threshold Limit Volume)
for any of the solvents involved.
II. TEST RESULTS
Sample B – No evidence of any residual solvent vapors
Sample C – No evidence of any residual solvent vapors
Control A – (Clean air sample) No evidence of any
residual solvent vapors
Control D – (Contaminated air sample) Evidence of solvent
at the 1.60 minute mark.
III. SUMMARY
Though solvents are present in the liquid state of the Bronz-Glow
Coil Coat & Green Fin Protector there is no evidence of
solvent residual or entrapment in the coil coatings once cured.
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